Testifying at Your Criminal Trial in Ontario: What to Expect

The decision to testify at your own criminal trial is one of the most significant choices you will face as an accused person. It is not a decision that should be made lightly, and it is not one you have to make at all. Understanding how testimony works — from the legal right to remain silent, to the mechanics of examination, to the mistakes that can derail an otherwise strong defence — will help you and your lawyer make the best decision for your case.

This guide explains everything you need to know about testifying at a criminal trial in Ontario, whether your matter is proceeding in Barrie or anywhere else in the province.

You Have the Right Not to Testify

This is the starting point, and it is non-negotiable. Section 11(c) of the Canadian Charter of Rights and Freedoms guarantees that no accused person can be compelled to testify at their own trial. The Crown cannot call you as a witness. Your own lawyer cannot force you to take the stand. The decision is yours alone.

Equally important: the judge or jury cannot draw a negative inference from your decision to remain silent. You are presumed innocent. The burden of proof rests entirely on the Crown. If you choose not to testify, no one is permitted to treat that silence as evidence of guilt or as something suspicious. The trial judge will instruct the jury accordingly if your case is before a jury.

This protection is fundamental to our criminal justice system, and it is one of the Charter rights that your defence lawyer will ensure is respected throughout the trial process.

When Testifying Helps Your Case

Not every case requires the accused to testify, but there are situations where it can make a real difference.

You Have an Explanation Only You Can Provide

If the defence turns on something only you witnessed or experienced — your state of mind, your reasons for being at a particular location, what you understood a conversation to mean — your testimony may be the only way to put that evidence before the court.

Credibility Is Central

In many trials, particularly those involving allegations of assault or domestic violence, the case comes down to competing versions of events. If you have a credible, consistent account that contradicts the complainant’s testimony, taking the stand allows the trier of fact to hear it directly from you. If you have been charged with domestic assault, your lawyer will carefully assess whether your testimony will strengthen the defence.

Self-Defence or Other Affirmative Defences

Certain defences — self-defence, duress, necessity — often require evidence about what you perceived and why you acted the way you did. While some of this evidence can come from other witnesses, your own account is often the most direct and compelling source.

When Testifying Can Hurt Your Case

There are equally compelling reasons not to testify, and experienced defence counsel will walk you through them honestly.

The Crown’s Case Is Already Weak

If the Crown has not met its burden of proof through its own witnesses and evidence, there may be no reason to testify. Putting yourself on the stand gives the Crown an opportunity to cross-examine you — an opportunity it would not otherwise have. Why hand the prosecution a chance to improve its case?

You Have a Criminal Record

If you have prior convictions, the Crown may be entitled to cross-examine you on them. This can affect how a judge or jury perceives your credibility, even though prior convictions do not mean you committed the offence you are currently charged with.

You Are Likely to Struggle Under Pressure

Cross-examination is adversarial by design. If you have difficulty controlling your emotions, tend to over-explain, or are likely to become combative, testifying can do more harm than good — even if the substance of what you have to say is truthful.

Your lawyer will assess all of these factors with you well before the trial. If you are unsure whether you need legal representation for your matter, our guide on whether you need a lawyer explains why experienced counsel is critical when facing criminal charges.

How Direct Examination Works

If you decide to testify, your lawyer will call you as a witness for the defence. This is called direct examination (or examination-in-chief).

During direct examination, your lawyer asks you open-ended questions — questions that allow you to explain what happened in your own words. Your lawyer cannot ask you leading questions (questions that suggest the answer). Instead, expect questions like:

• “What happened on the evening of June 12?”
• “What did you see when you arrived?”
• “Can you describe the conversation you had?”

The purpose of direct examination is to present your version of events clearly and in a logical order. Your lawyer will guide you through the relevant topics, but you are the one telling the story. The goal is to give the judge or jury a coherent, believable account.

Tips for Direct Examination

• Listen carefully to each question. Answer the question that was asked — not the one you think is coming next.
• Speak in plain language. You are not expected to use legal terminology.
• Take your time. There is no rush. Pause before answering if you need a moment to collect your thoughts.
• Be honest. If you do not remember something, say so. An honest “I don’t recall” is far better than a guess that turns out to be wrong.

How Cross-Examination Works

After your lawyer finishes direct examination, the Crown prosecutor will cross-examine you. This is often the most difficult part of testifying.

Cross-examination is fundamentally different from direct examination. The Crown is permitted to ask leading questions — questions that contain the answer and are designed to get a “yes” or “no” response. For example:

• “You were angry that night, weren’t you?”
• “You didn’t call the police, did you?”
• “Isn’t it true that you told your friend a completely different story?”

The purpose of cross-examination is to test, challenge, and undermine your testimony. The Crown will look for inconsistencies between what you say on the stand and any prior statements you have made — whether to police, in text messages, or in other proceedings like a preliminary inquiry. The Crown may also try to provoke an emotional reaction or get you to agree with propositions that support the prosecution’s theory of the case.

Cross-examination is not a conversation. It is a structured, strategic exercise. Understanding this in advance is essential.

What the Crown Is Looking For

• Contradictions with prior statements or evidence already before the court
• Implausible details that undermine your credibility
• Emotional reactions that suggest dishonesty or a lack of control
• Admissions — even partial ones — that support the Crown’s theory
• Evasiveness that makes it appear you are hiding something

How to Prepare With Your Lawyer

Preparing to testify is not the same as being coached. Coaching a witness — telling them what to say or how to answer specific questions — is improper and unethical. But preparing a witness is not only appropriate, it is essential.

Preparation with your lawyer typically involves:

• Reviewing the facts so you are clear on the chronology and key details
• Understanding the process — knowing how direct examination and cross-examination will unfold
• Discussing areas of vulnerability — your lawyer will identify the topics the Crown is likely to focus on so you are not caught off guard
• Practising how to listen and respond — learning to pause before answering, to answer only the question asked, and to remain calm under pressure

Your lawyer may also review your prior statements with you. If you gave a statement to police, it is critical that you are familiar with what you said, because the Crown certainly will be. Any inconsistency between your police statement and your trial testimony will be highlighted during cross-examination.

If you are still at an early stage in your case and working through the election process, your lawyer will help you understand how the choice between judge alone and judge and jury affects the way testimony is received and assessed.

Courtroom Etiquette When Testifying

How you conduct yourself on the stand matters. The trier of fact — whether a judge or jury — is assessing not just what you say, but how you say it.

• Address the judge as “Your Honour.” If you are unsure how to address the court, your lawyer will explain this before you testify.
• Speak clearly and at a moderate pace. The court reporter or recording system needs to capture your words accurately. Do not mumble, whisper, or rush.
• Do not argue with the Crown prosecutor. Cross-examination can feel combative, but your job is to answer questions, not to debate. If a question is improper, your lawyer will object.
• Do not look to your lawyer for help during cross-examination. You are on your own once you are in the witness box. Trust your preparation.
• Dress appropriately. Business attire is expected. Your appearance communicates respect for the process.

These may seem like small details, but judges and juries notice them. A witness who is composed, polite, and respectful is far more credible than one who is hostile or dismissive — regardless of the substance of the testimony.

Common Mistakes When Testifying

Even truthful, well-intentioned witnesses make mistakes on the stand. Being aware of the most common ones can help you avoid them.

Over-Explaining

When asked a simple question, give a simple answer. Witnesses who volunteer additional information often end up opening the door to topics the Crown would not otherwise have been able to explore. If the Crown asks, “Were you at the bar that night?” and the answer is yes, say yes. Do not explain why you were there, who you were with, or what you were drinking — unless your lawyer asks you to.

Getting Angry or Emotional

The Crown may ask questions that feel unfair, accusatory, or deliberately provocative. That is the point. Losing your temper on the stand damages your credibility, even if the anger is justified. Stay calm. Pause. Answer the question.

Guessing Instead of Saying “I Don’t Recall”

If you do not remember something, the correct answer is “I don’t recall” or “I’m not sure.” Guessing can lead to inaccurate testimony, and if the Crown later introduces evidence that contradicts your guess, it will look like you lied — even though you were simply trying to be helpful. Never fabricate details to fill gaps in your memory.

Contradicting Your Own Prior Statements

If you gave a statement to police, made comments in text messages, or testified at a preliminary inquiry, the Crown will have those records. If your trial testimony contradicts what you said before, the Crown will confront you with the inconsistency. This is one of the most damaging things that can happen during cross-examination. Review your prior statements thoroughly with your lawyer before taking the stand.

Failing to Listen to the Question

Witnesses sometimes answer the question they expected rather than the question that was actually asked. Listen carefully to every word. If you do not understand a question, say so. You are entitled to ask for clarification.

What Happens After You Testify

Once cross-examination is complete, your lawyer has the opportunity to conduct re-examination. Re-examination is limited in scope — your lawyer can only ask questions that arise from issues raised during cross-examination. The purpose is to clarify or rehabilitate your testimony on points where the Crown may have created confusion or an unfair impression.

After re-examination, you step down from the witness box. If the defence has other witnesses, they will be called next. Once all evidence has been presented by both sides, the trial moves to closing submissions — where the Crown and your lawyer each summarize the evidence and argue why it supports their position. In a jury trial, the judge will then instruct the jury on the law before they deliberate.

Your testimony is one piece of the puzzle. It will be considered alongside all of the other evidence — witness testimony, documents, forensic evidence, and anything else before the court. The strength of your testimony depends not just on what you said, but on how it fits with everything else.

For a broader understanding of how the trial process begins, our guide on what to expect at your first court appearance provides helpful context on how criminal proceedings unfold from day one.

Talk to a Lawyer Before You Decide

The decision to testify is deeply personal and highly strategic. It depends on the strength of the Crown’s case, the nature of the charges, the evidence available, and your individual circumstances. It is not a decision you should make alone.

At Mor Fisher LLP in Barrie, Ontario, we prepare our clients for every stage of the trial process — including whether and how to testify. We will give you an honest assessment of the risks and benefits so you can make an informed decision with confidence.

If you are facing criminal charges and have questions about your upcoming trial, contact us today or call 705-252-2828 for a consultation.